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ffmpeg/libavutil/opencl.c

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/*
* Copyright (C) 2012 Peng Gao <peng@multicorewareinc.com>
* Copyright (C) 2012 Li Cao <li@multicorewareinc.com>
* Copyright (C) 2012 Wei Gao <weigao@multicorewareinc.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "opencl.h"
#include "avstring.h"
#include "log.h"
#include "avassert.h"
#if HAVE_PTHREADS
#include <pthread.h>
static pthread_mutex_t atomic_opencl_lock = PTHREAD_MUTEX_INITIALIZER;
#define LOCK_OPENCL pthread_mutex_lock(&atomic_opencl_lock);
#define UNLOCK_OPENCL pthread_mutex_unlock(&atomic_opencl_lock);
#elif !HAVE_THREADS
#define LOCK_OPENCL
#define UNLOCK_OPENCL
#endif
#define MAX_KERNEL_NUM 500
#define MAX_KERNEL_CODE_NUM 200
typedef struct {
int dev_idx;
int platform_idx;
} UserSpecDevInfo;
typedef struct {
int is_compiled;
const char *kernel_string;
} KernelCode;
typedef struct {
int init_count;
UserSpecDevInfo usr_spec_dev_info;
cl_platform_id platform_id;
cl_device_type device_type;
cl_context context;
cl_device_id *device_ids;
cl_device_id device_id;
cl_command_queue command_queue;
int program_count;
cl_program programs[MAX_KERNEL_CODE_NUM];
int kernel_code_count;
KernelCode kernel_code[MAX_KERNEL_CODE_NUM];
int kernel_count;
/**
* if set to 1, the OpenCL environment was created by the user and
* passed as AVOpenCLExternalEnv when initing ,0:created by opencl wrapper.
*/
int is_user_created;
} GPUEnv;
typedef struct {
const AVClass *class;
int log_offset;
void *log_ctx;
} OpenclUtils;
static const AVClass openclutils_class = {
.class_name = "OPENCLUTILS",
.item_name = av_default_item_name,
.version = LIBAVUTIL_VERSION_INT,
.log_level_offset_offset = offsetof(OpenclUtils, log_offset),
.parent_log_context_offset = offsetof(OpenclUtils, log_ctx),
};
static OpenclUtils openclutils = {&openclutils_class};
static GPUEnv gpu_env;
static const cl_device_type device_type[] = {CL_DEVICE_TYPE_GPU, CL_DEVICE_TYPE_CPU, CL_DEVICE_TYPE_DEFAULT};
typedef struct {
int err_code;
const char *err_str;
} OpenclErrorMsg;
static const OpenclErrorMsg opencl_err_msg[] = {
{CL_DEVICE_NOT_FOUND, "DEVICE NOT FOUND"},
{CL_DEVICE_NOT_AVAILABLE, "DEVICE NOT AVAILABLE"},
{CL_COMPILER_NOT_AVAILABLE, "COMPILER NOT AVAILABLE"},
{CL_MEM_OBJECT_ALLOCATION_FAILURE, "MEM OBJECT ALLOCATION FAILURE"},
{CL_OUT_OF_RESOURCES, "OUT OF RESOURCES"},
{CL_OUT_OF_HOST_MEMORY, "OUT OF HOST MEMORY"},
{CL_PROFILING_INFO_NOT_AVAILABLE, "PROFILING INFO NOT AVAILABLE"},
{CL_MEM_COPY_OVERLAP, "MEM COPY OVERLAP"},
{CL_IMAGE_FORMAT_MISMATCH, "IMAGE FORMAT MISMATCH"},
{CL_IMAGE_FORMAT_NOT_SUPPORTED, "IMAGE FORMAT NOT_SUPPORTED"},
{CL_BUILD_PROGRAM_FAILURE, "BUILD PROGRAM FAILURE"},
{CL_MAP_FAILURE, "MAP FAILURE"},
{CL_MISALIGNED_SUB_BUFFER_OFFSET, "MISALIGNED SUB BUFFER OFFSET"},
{CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST, "EXEC STATUS ERROR FOR EVENTS IN WAIT LIST"},
{CL_COMPILE_PROGRAM_FAILURE, "COMPILE PROGRAM FAILURE"},
{CL_LINKER_NOT_AVAILABLE, "LINKER NOT AVAILABLE"},
{CL_LINK_PROGRAM_FAILURE, "LINK PROGRAM FAILURE"},
{CL_DEVICE_PARTITION_FAILED, "DEVICE PARTITION FAILED"},
{CL_KERNEL_ARG_INFO_NOT_AVAILABLE, "KERNEL ARG INFO NOT AVAILABLE"},
{CL_INVALID_VALUE, "INVALID VALUE"},
{CL_INVALID_DEVICE_TYPE, "INVALID DEVICE TYPE"},
{CL_INVALID_PLATFORM, "INVALID PLATFORM"},
{CL_INVALID_DEVICE, "INVALID DEVICE"},
{CL_INVALID_CONTEXT, "INVALID CONTEXT"},
{CL_INVALID_QUEUE_PROPERTIES, "INVALID QUEUE PROPERTIES"},
{CL_INVALID_COMMAND_QUEUE, "INVALID COMMAND QUEUE"},
{CL_INVALID_HOST_PTR, "INVALID HOST PTR"},
{CL_INVALID_MEM_OBJECT, "INVALID MEM OBJECT"},
{CL_INVALID_IMAGE_FORMAT_DESCRIPTOR, "INVALID IMAGE FORMAT DESCRIPTOR"},
{CL_INVALID_IMAGE_SIZE, "INVALID IMAGE SIZE"},
{CL_INVALID_SAMPLER, "INVALID SAMPLER"},
{CL_INVALID_BINARY, "INVALID BINARY"},
{CL_INVALID_BUILD_OPTIONS, "INVALID BUILD OPTIONS"},
{CL_INVALID_PROGRAM, "INVALID PROGRAM"},
{CL_INVALID_PROGRAM_EXECUTABLE, "INVALID PROGRAM EXECUTABLE"},
{CL_INVALID_KERNEL_NAME, "INVALID KERNEL NAME"},
{CL_INVALID_KERNEL_DEFINITION, "INVALID KERNEL DEFINITION"},
{CL_INVALID_KERNEL, "INVALID KERNEL"},
{CL_INVALID_ARG_INDEX, "INVALID ARG INDEX"},
{CL_INVALID_ARG_VALUE, "INVALID ARG VALUE"},
{CL_INVALID_ARG_SIZE, "INVALID ARG_SIZE"},
{CL_INVALID_KERNEL_ARGS, "INVALID KERNEL ARGS"},
{CL_INVALID_WORK_DIMENSION, "INVALID WORK DIMENSION"},
{CL_INVALID_WORK_GROUP_SIZE, "INVALID WORK GROUP SIZE"},
{CL_INVALID_WORK_ITEM_SIZE, "INVALID WORK ITEM SIZE"},
{CL_INVALID_GLOBAL_OFFSET, "INVALID GLOBAL OFFSET"},
{CL_INVALID_EVENT_WAIT_LIST, "INVALID EVENT WAIT LIST"},
{CL_INVALID_EVENT, "INVALID EVENT"},
{CL_INVALID_OPERATION, "INVALID OPERATION"},
{CL_INVALID_GL_OBJECT, "INVALID GL OBJECT"},
{CL_INVALID_BUFFER_SIZE, "INVALID BUFFER SIZE"},
{CL_INVALID_MIP_LEVEL, "INVALID MIP LEVEL"},
{CL_INVALID_GLOBAL_WORK_SIZE, "INVALID GLOBAL WORK SIZE"},
{CL_INVALID_PROPERTY, "INVALID PROPERTY"},
{CL_INVALID_IMAGE_DESCRIPTOR, "INVALID IMAGE DESCRIPTOR"},
{CL_INVALID_COMPILER_OPTIONS, "INVALID COMPILER OPTIONS"},
{CL_INVALID_LINKER_OPTIONS, "INVALID LINKER OPTIONS"},
{CL_INVALID_DEVICE_PARTITION_COUNT, "INVALID DEVICE PARTITION COUNT"},
};
static const char *opencl_errstr(cl_int status)
{
int i;
for (i = 0; i < sizeof(opencl_err_msg); i++) {
if (opencl_err_msg[i].err_code == status)
return opencl_err_msg[i].err_str;
}
return "unknown error";
}
AVOpenCLExternalEnv *av_opencl_alloc_external_env(void)
{
AVOpenCLExternalEnv *ext = av_mallocz(sizeof(AVOpenCLExternalEnv));
if (!ext) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not malloc external opencl environment data space\n");
}
return ext;
}
void av_opencl_free_external_env(AVOpenCLExternalEnv **ext_opencl_env)
{
av_freep(ext_opencl_env);
}
int av_opencl_register_kernel_code(const char *kernel_code)
{
int i, ret = 0;
LOCK_OPENCL;
if (gpu_env.kernel_code_count >= MAX_KERNEL_CODE_NUM) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not register kernel code, maximum number of registered kernel code %d already reached\n",
MAX_KERNEL_CODE_NUM);
ret = AVERROR(EINVAL);
goto end;
}
for (i = 0; i < gpu_env.kernel_code_count; i++) {
if (gpu_env.kernel_code[i].kernel_string == kernel_code) {
av_log(&openclutils, AV_LOG_WARNING, "Same kernel code has been registered\n");
goto end;
}
}
gpu_env.kernel_code[gpu_env.kernel_code_count].kernel_string = kernel_code;
gpu_env.kernel_code[gpu_env.kernel_code_count].is_compiled = 0;
gpu_env.kernel_code_count++;
end:
UNLOCK_OPENCL;
return ret;
}
int av_opencl_create_kernel(AVOpenCLKernelEnv *env, const char *kernel_name)
{
cl_int status;
int i, ret = 0;
LOCK_OPENCL;
if (strlen(kernel_name) + 1 > AV_OPENCL_MAX_KERNEL_NAME_SIZE) {
av_log(&openclutils, AV_LOG_ERROR, "Created kernel name %s is too long\n", kernel_name);
ret = AVERROR(EINVAL);
goto end;
}
if (!env->kernel) {
if (gpu_env.kernel_count >= MAX_KERNEL_NUM) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not create kernel with name '%s', maximum number of kernels %d already reached\n",
kernel_name, MAX_KERNEL_NUM);
ret = AVERROR(EINVAL);
goto end;
}
if (gpu_env.program_count == 0) {
av_log(&openclutils, AV_LOG_ERROR, "Program count of OpenCL is 0, can not create kernel\n");
ret = AVERROR(EINVAL);
goto end;
}
for (i = 0; i < gpu_env.program_count; i++) {
env->kernel = clCreateKernel(gpu_env.programs[i], kernel_name, &status);
if (status == CL_SUCCESS)
break;
}
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR, "Could not create OpenCL kernel: %s\n", opencl_errstr(status));
ret = AVERROR_EXTERNAL;
goto end;
}
gpu_env.kernel_count++;
env->command_queue = gpu_env.command_queue;
av_strlcpy(env->kernel_name, kernel_name, sizeof(env->kernel_name));
}
end:
UNLOCK_OPENCL;
return ret;
}
void av_opencl_release_kernel(AVOpenCLKernelEnv *env)
{
cl_int status;
LOCK_OPENCL
if (!env->kernel)
goto end;
status = clReleaseKernel(env->kernel);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR, "Could not release kernel: %s\n",
opencl_errstr(status));
}
env->kernel = NULL;
env->command_queue = NULL;
env->kernel_name[0] = 0;
gpu_env.kernel_count--;
end:
UNLOCK_OPENCL
}
static int init_opencl_env(GPUEnv *gpu_env, AVOpenCLExternalEnv *ext_opencl_env)
{
size_t device_length;
cl_int status;
cl_uint num_platforms, num_devices;
cl_platform_id *platform_ids = NULL;
cl_context_properties cps[3];
char platform_name[100];
int i, j, ret = 0;
if (ext_opencl_env) {
if (gpu_env->is_user_created)
return 0;
gpu_env->platform_id = ext_opencl_env->platform_id;
gpu_env->is_user_created = 1;
gpu_env->command_queue = ext_opencl_env->command_queue;
gpu_env->context = ext_opencl_env->context;
gpu_env->device_ids = ext_opencl_env->device_ids;
gpu_env->device_id = ext_opencl_env->device_id;
gpu_env->device_type = ext_opencl_env->device_type;
} else {
if (!gpu_env->is_user_created) {
status = clGetPlatformIDs(0, NULL, &num_platforms);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR, "Could not get OpenCL platform ids: %s\n", opencl_errstr(status));
return AVERROR_EXTERNAL;
}
if (gpu_env->usr_spec_dev_info.platform_idx >= 0) {
if (num_platforms < gpu_env->usr_spec_dev_info.platform_idx + 1) {
av_log(&openclutils, AV_LOG_ERROR, "User set platform index not exist\n");
return AVERROR(EINVAL);
}
}
if (num_platforms > 0) {
platform_ids = av_mallocz(num_platforms * sizeof(cl_platform_id));
if (!platform_ids) {
ret = AVERROR(ENOMEM);
goto end;
}
status = clGetPlatformIDs(num_platforms, platform_ids, NULL);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR, "Could not get OpenCL platform ids: %s\n", opencl_errstr(status));
ret = AVERROR_EXTERNAL;
goto end;
}
i = 0;
if (gpu_env->usr_spec_dev_info.platform_idx >= 0) {
i = gpu_env->usr_spec_dev_info.platform_idx;
}
while (i < num_platforms) {
status = clGetPlatformInfo(platform_ids[i], CL_PLATFORM_VENDOR,
sizeof(platform_name), platform_name,
NULL);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR, "Could not get OpenCL platform info: %s\n", opencl_errstr(status));
ret = AVERROR_EXTERNAL;
goto end;
}
gpu_env->platform_id = platform_ids[i];
for (j = 0; j < FF_ARRAY_ELEMS(device_type); j++) {
status = clGetDeviceIDs(gpu_env->platform_id, device_type[j], 0, NULL, &num_devices);
if (status == CL_SUCCESS)
break;
}
if (num_devices)
break;
if (gpu_env->usr_spec_dev_info.platform_idx >= 0) {
av_log(&openclutils, AV_LOG_ERROR, "Device number of user set platform is 0\n");
ret = AVERROR_EXTERNAL;
goto end;
}
if (i >= num_platforms - 1) {
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not get OpenCL device ids: %s\n", opencl_errstr(status));
ret = AVERROR(EINVAL);
goto end;
}
}
i++;
}
}
if (!gpu_env->platform_id) {
av_log(&openclutils, AV_LOG_ERROR, "Could not get OpenCL platforms\n");
ret = AVERROR_EXTERNAL;
goto end;
}
if (gpu_env->usr_spec_dev_info.dev_idx >= 0) {
if (num_devices < gpu_env->usr_spec_dev_info.dev_idx + 1) {
av_log(&openclutils, AV_LOG_ERROR, "Could not get OpenCL device idx in the user set platform\n");
ret = AVERROR(EINVAL);
goto end;
}
}
/*
* Use available platform.
*/
av_log(&openclutils, AV_LOG_VERBOSE, "Platform Name: %s\n", platform_name);
cps[0] = CL_CONTEXT_PLATFORM;
cps[1] = (cl_context_properties)gpu_env->platform_id;
cps[2] = 0;
/* Check for GPU. */
for (i = 0; i < FF_ARRAY_ELEMS(device_type); i++) {
gpu_env->device_type = device_type[i];
gpu_env->context = clCreateContextFromType(cps, gpu_env->device_type,
NULL, NULL, &status);
if (status == CL_SUCCESS)
break;
}
if (!gpu_env->context) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not get OpenCL context from device type: %s\n", opencl_errstr(status));
ret = AVERROR_EXTERNAL;
goto end;
}
/* Detect OpenCL devices. */
/* First, get the size of device list data */
status = clGetContextInfo(gpu_env->context, CL_CONTEXT_DEVICES,
0, NULL, &device_length);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not get OpenCL device length: %s\n", opencl_errstr(status));
ret = AVERROR_EXTERNAL;
goto end;
}
if (device_length == 0) {
av_log(&openclutils, AV_LOG_ERROR, "Could not get OpenCL device length\n");
ret = AVERROR_EXTERNAL;
goto end;
}
/* Now allocate memory for device list based on the size we got earlier */
gpu_env->device_ids = av_mallocz(device_length);
if (!gpu_env->device_ids) {
ret = AVERROR(ENOMEM);
goto end;
}
/* Now, get the device list data */
status = clGetContextInfo(gpu_env->context, CL_CONTEXT_DEVICES, device_length,
gpu_env->device_ids, NULL);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not get OpenCL context info: %s\n", opencl_errstr(status));
ret = AVERROR_EXTERNAL;
goto end;
}
/* Create OpenCL command queue. */
i = 0;
if (gpu_env->usr_spec_dev_info.dev_idx >= 0) {
i = gpu_env->usr_spec_dev_info.dev_idx;
}
gpu_env->command_queue = clCreateCommandQueue(gpu_env->context, gpu_env->device_ids[i],
0, &status);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not create OpenCL command queue: %s\n", opencl_errstr(status));
ret = AVERROR_EXTERNAL;
goto end;
}
}
}
end:
av_free(platform_ids);
return ret;
}
static int compile_kernel_file(GPUEnv *gpu_env, const char *build_options)
{
cl_int status;
char *temp, *source_str = NULL;
size_t source_str_len = 0;
int i, ret = 0;
for (i = 0; i < gpu_env->kernel_code_count; i++) {
if (!gpu_env->kernel_code[i].is_compiled)
source_str_len += strlen(gpu_env->kernel_code[i].kernel_string);
}
if (!source_str_len) {
return 0;
}
source_str = av_mallocz(source_str_len + 1);
if (!source_str) {
return AVERROR(ENOMEM);
}
temp = source_str;
for (i = 0; i < gpu_env->kernel_code_count; i++) {
if (!gpu_env->kernel_code[i].is_compiled) {
memcpy(temp, gpu_env->kernel_code[i].kernel_string,
strlen(gpu_env->kernel_code[i].kernel_string));
gpu_env->kernel_code[i].is_compiled = 1;
temp += strlen(gpu_env->kernel_code[i].kernel_string);
}
}
/* create a CL program using the kernel source */
gpu_env->programs[gpu_env->program_count] = clCreateProgramWithSource(gpu_env->context,
1, (const char **)(&source_str),
&source_str_len, &status);
if(status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not create OpenCL program with source code: %s\n", opencl_errstr(status));
ret = AVERROR_EXTERNAL;
goto end;
}
if (!gpu_env->programs[gpu_env->program_count]) {
av_log(&openclutils, AV_LOG_ERROR, "Created program is NULL\n");
ret = AVERROR_EXTERNAL;
goto end;
}
i = 0;
if (gpu_env->usr_spec_dev_info.dev_idx >= 0)
i = gpu_env->usr_spec_dev_info.dev_idx;
/* create a cl program executable for all the devices specified */
if (!gpu_env->is_user_created)
status = clBuildProgram(gpu_env->programs[gpu_env->program_count], 1, &gpu_env->device_ids[i],
build_options, NULL, NULL);
else
status = clBuildProgram(gpu_env->programs[gpu_env->program_count], 1, &(gpu_env->device_id),
build_options, NULL, NULL);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not compile OpenCL kernel: %s\n", opencl_errstr(status));
ret = AVERROR_EXTERNAL;
goto end;
}
gpu_env->program_count++;
end:
av_free(source_str);
return ret;
}
int av_opencl_init(AVDictionary *options, AVOpenCLExternalEnv *ext_opencl_env)
{
int ret = 0;
AVDictionaryEntry *opt_build_entry;
AVDictionaryEntry *opt_platform_entry;
AVDictionaryEntry *opt_device_entry;
char *pos;
LOCK_OPENCL
if (!gpu_env.init_count) {
opt_platform_entry = av_dict_get(options, "platform_idx", NULL, 0);
opt_device_entry = av_dict_get(options, "device_idx", NULL, 0);
/* initialize devices, context, command_queue */
gpu_env.usr_spec_dev_info.platform_idx = -1;
gpu_env.usr_spec_dev_info.dev_idx = -1;
if (opt_platform_entry) {
gpu_env.usr_spec_dev_info.platform_idx = strtol(opt_platform_entry->value, &pos, 10);
if (pos == opt_platform_entry->value) {
av_log(&openclutils, AV_LOG_ERROR, "Platform index should be a number\n");
ret = AVERROR(EINVAL);
goto end;
}
}
if (opt_device_entry) {
gpu_env.usr_spec_dev_info.dev_idx = strtol(opt_device_entry->value, &pos, 10);
if (pos == opt_platform_entry->value) {
av_log(&openclutils, AV_LOG_ERROR, "Device index should be a number\n");
ret = AVERROR(EINVAL);
goto end;
}
}
ret = init_opencl_env(&gpu_env, ext_opencl_env);
if (ret < 0)
goto end;
}
/*initialize program, kernel_name, kernel_count*/
opt_build_entry = av_dict_get(options, "build_options", NULL, 0);
if (opt_build_entry)
ret = compile_kernel_file(&gpu_env, opt_build_entry->value);
else
ret = compile_kernel_file(&gpu_env, NULL);
if (ret < 0)
goto end;
if (gpu_env.kernel_code_count <= 0) {
av_log(&openclutils, AV_LOG_ERROR,
"No kernel code is registered, compile kernel file failed\n");
ret = AVERROR(EINVAL);
goto end;
}
gpu_env.init_count++;
end:
UNLOCK_OPENCL
return ret;
}
void av_opencl_uninit(void)
{
cl_int status;
int i;
LOCK_OPENCL
gpu_env.init_count--;
if (gpu_env.is_user_created)
goto end;
if (gpu_env.init_count > 0 || gpu_env.kernel_count > 0)
goto end;
for (i = 0; i < gpu_env.program_count; i++) {
if (gpu_env.programs[i]) {
status = clReleaseProgram(gpu_env.programs[i]);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not release OpenCL program: %s\n", opencl_errstr(status));
}
gpu_env.programs[i] = NULL;
}
}
if (gpu_env.command_queue) {
status = clReleaseCommandQueue(gpu_env.command_queue);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not release OpenCL command queue: %s\n", opencl_errstr(status));
}
gpu_env.command_queue = NULL;
}
if (gpu_env.context) {
status = clReleaseContext(gpu_env.context);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not release OpenCL context: %s\n", opencl_errstr(status));
}
gpu_env.context = NULL;
}
av_freep(&(gpu_env.device_ids));
end:
UNLOCK_OPENCL
}
int av_opencl_buffer_create(cl_mem *cl_buf, size_t cl_buf_size, int flags, void *host_ptr)
{
cl_int status;
*cl_buf = clCreateBuffer(gpu_env.context, flags, cl_buf_size, host_ptr, &status);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR, "Could not create OpenCL buffer: %s\n", opencl_errstr(status));
return AVERROR_EXTERNAL;
}
return 0;
}
void av_opencl_buffer_release(cl_mem *cl_buf)
{
cl_int status = 0;
if (!cl_buf)
return;
status = clReleaseMemObject(*cl_buf);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not release OpenCL buffer: %s\n", opencl_errstr(status));
}
memset(cl_buf, 0, sizeof(*cl_buf));
}
int av_opencl_buffer_write(cl_mem dst_cl_buf, uint8_t *src_buf, size_t buf_size)
{
cl_int status;
void *mapped = clEnqueueMapBuffer(gpu_env.command_queue, dst_cl_buf,
CL_TRUE,CL_MAP_WRITE, 0, sizeof(uint8_t) * buf_size,
0, NULL, NULL, &status);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not map OpenCL buffer: %s\n", opencl_errstr(status));
return AVERROR_EXTERNAL;
}
memcpy(mapped, src_buf, buf_size);
status = clEnqueueUnmapMemObject(gpu_env.command_queue, dst_cl_buf, mapped, 0, NULL, NULL);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not unmap OpenCL buffer: %s\n", opencl_errstr(status));
return AVERROR_EXTERNAL;
}
return 0;
}
int av_opencl_buffer_read(uint8_t *dst_buf, cl_mem src_cl_buf, size_t buf_size)
{
cl_int status;
void *mapped = clEnqueueMapBuffer(gpu_env.command_queue, src_cl_buf,
CL_TRUE,CL_MAP_READ, 0, buf_size,
0, NULL, NULL, &status);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not map OpenCL buffer: %s\n", opencl_errstr(status));
return AVERROR_EXTERNAL;
}
memcpy(dst_buf, mapped, buf_size);
status = clEnqueueUnmapMemObject(gpu_env.command_queue, src_cl_buf, mapped, 0, NULL, NULL);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not unmap OpenCL buffer: %s\n", opencl_errstr(status));
return AVERROR_EXTERNAL;
}
return 0;
}
int av_opencl_buffer_write_image(cl_mem dst_cl_buf, size_t cl_buffer_size, int dst_cl_offset,
uint8_t **src_data, int *plane_size, int plane_num)
{
int i, buffer_size = 0;
uint8_t *temp;
cl_int status;
void *mapped;
if ((unsigned int)plane_num > 8) {
return AVERROR(EINVAL);
}
for (i = 0;i < plane_num;i++) {
buffer_size += plane_size[i];
}
if (buffer_size > cl_buffer_size) {
av_log(&openclutils, AV_LOG_ERROR,
"Cannot write image to OpenCL buffer: buffer too small\n");
return AVERROR(EINVAL);
}
mapped = clEnqueueMapBuffer(gpu_env.command_queue, dst_cl_buf,
CL_TRUE,CL_MAP_WRITE, 0, buffer_size + dst_cl_offset,
0, NULL, NULL, &status);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not map OpenCL buffer: %s\n", opencl_errstr(status));
return AVERROR_EXTERNAL;
}
temp = mapped;
temp += dst_cl_offset;
for (i = 0; i < plane_num; i++) {
memcpy(temp, src_data[i], plane_size[i]);
temp += plane_size[i];
}
status = clEnqueueUnmapMemObject(gpu_env.command_queue, dst_cl_buf, mapped, 0, NULL, NULL);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not unmap OpenCL buffer: %s\n", opencl_errstr(status));
return AVERROR_EXTERNAL;
}
return 0;
}
int av_opencl_buffer_read_image(uint8_t **dst_data, int *plane_size, int plane_num,
cl_mem src_cl_buf, size_t cl_buffer_size)
{
int i,buffer_size = 0,ret = 0;
uint8_t *temp;
void *mapped;
cl_int status;
if ((unsigned int)plane_num > 8) {
return AVERROR(EINVAL);
}
for (i = 0; i < plane_num; i++) {
buffer_size += plane_size[i];
}
if (buffer_size > cl_buffer_size) {
av_log(&openclutils, AV_LOG_ERROR,
"Cannot write image to CPU buffer: OpenCL buffer too small\n");
return AVERROR(EINVAL);
}
mapped = clEnqueueMapBuffer(gpu_env.command_queue, src_cl_buf,
CL_TRUE,CL_MAP_READ, 0, buffer_size,
0, NULL, NULL, &status);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not map OpenCL buffer: %s\n", opencl_errstr(status));
return AVERROR_EXTERNAL;
}
temp = mapped;
if (ret >= 0) {
for (i = 0; i < plane_num; i++) {
memcpy(dst_data[i], temp, plane_size[i]);
temp += plane_size[i];
}
}
status = clEnqueueUnmapMemObject(gpu_env.command_queue, src_cl_buf, mapped, 0, NULL, NULL);
if (status != CL_SUCCESS) {
av_log(&openclutils, AV_LOG_ERROR,
"Could not unmap OpenCL buffer: %s\n", opencl_errstr(status));
return AVERROR_EXTERNAL;
}
return 0;
}
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